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    <title>AntSK 语义文本切片服务 - 智能文档处理平台 | 基于AI的语义分析</title>
    
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    <meta name="description" content="AntSK语义文本切片服务，基于深度语义理解的智能文档切片工具。支持PDF、Word、TXT等多种格式，专为RAG应用优化，智能识别语义边界，确保切片的语义完整性。">
    <meta name="keywords" content="语义切片,文档处理,RAG,语义分析,AntSK,智能切片,文档解析,语义理解,AI文档处理,文本分析">
    <meta name="author" content="AntSK Team">
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    <meta property="og:title" content="AntSK 语义文本切片服务 - 智能文档处理平台">
    <meta property="og:description" content="基于深度语义理解的智能文档切片工具，专门解决传统切片导致的语义割裂问题。">
    <meta property="og:site_name" content="AntSK FileChunk">
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    <!-- 结构化数据 -->
    <script type="application/ld+json">
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        "name": "AntSK 语义文本切片服务",
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        "description": "基于深度语义理解的智能文档切片工具，专门解决传统基于固定长度或简单分隔符切片导致的语义割裂问题",
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            "智能语义边界检测",
            "多格式文档解析",
            "自适应切片大小",
            "语义连贯性检测",
            "质量评估系统",
            "RESTful API接口"
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    <style>
        :root {
            --primary-color: #7F7FFF;
            --primary-gradient: linear-gradient(135deg, #7F7FFF 0%, #8F8FFF 100%);
            --secondary-color: #f8f9ff;
            --accent-color: #667eea;
            --text-color: #333;
            --text-light: #666;
            --background: #ffffff;
            --surface: rgba(255, 255, 255, 0.95);
            --border: #e0e6ff;
            --shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 25px 50px rgba(127, 127, 255, 0.15);
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        * {
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            box-sizing: border-box;
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            min-height: 100vh;
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        /* 导航栏 */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            padding: 1rem 0;
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        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
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        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-color);
            text-decoration: none;
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        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
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        .nav-links a {
            color: var(--text-color);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
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        .nav-links a:hover {
            color: var(--primary-color);
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        .cta-button {
            background: var(--primary-gradient);
            color: white;
            padding: 0.75rem 1.5rem;
            border-radius: 25px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(127, 127, 255, 0.3);
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        .cta-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 25px rgba(127, 127, 255, 0.4);
        }

        /* 英雄区域 */
        .hero {
            padding: 8rem 2rem 4rem;
            text-align: center;
            max-width: 1200px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 700;
            margin-bottom: 1.5rem;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
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        .hero-subtitle {
            font-size: 1.25rem;
            color: var(--text-light);
            margin-bottom: 2rem;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 3rem;
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        .btn-primary {
            background: var(--primary-gradient);
            color: white;
            padding: 1rem 2rem;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 30px 60px rgba(127, 127, 255, 0.25);
        }

        .btn-secondary {
            background: transparent;
            color: var(--primary-color);
            padding: 1rem 2rem;
            border: 2px solid var(--primary-color);
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            transition: all 0.3s ease;
        }

        .btn-secondary:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-2px);
        }

        /* 特性展示 */
        .features {
            padding: 4rem 2rem;
            max-width: 1200px;
            margin: 0 auto;
            scroll-margin-top: 100px;
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-color);
        }

        .section-subtitle {
            text-align: center;
            font-size: 1.1rem;
            color: var(--text-light);
            margin-bottom: 3rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .feature-card {
            background: var(--surface);
            padding: 2rem;
            border-radius: 20px;
            box-shadow: var(--shadow);
            text-align: center;
            transition: all 0.3s ease;
            border: 1px solid var(--border);
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .feature-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
        }

        .feature-title {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--text-color);
        }

        .feature-description {
            color: var(--text-light);
            line-height: 1.6;
        }

        /* 架构展示 */
        .architecture {
            background: var(--surface);
            padding: 4rem 2rem;
            margin: 4rem 0;
            scroll-margin-top: 100px;
        }

        .architecture-container {
            max-width: 1000px;
            margin: 0 auto;
            text-align: center;
        }

        .architecture-diagram {
            background: white;
            border-radius: 20px;
            padding: 2rem;
            margin: 3rem 0;
            box-shadow: var(--shadow);
        }

        .architecture-flow {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2rem;
            align-items: center;
        }

        .arch-step {
            background: var(--secondary-color);
            padding: 1.5rem;
            border-radius: 15px;
            border: 2px solid var(--border);
            min-width: 150px;
            position: relative;
        }

        .arch-step h4 {
            color: var(--primary-color);
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .arch-step p {
            font-size: 0.9rem;
            color: var(--text-light);
        }

        .arch-arrow {
            font-size: 1.5rem;
            color: var(--primary-color);
            margin: 0 1rem;
        }

        /* 使用场景 */
        .use-cases {
            padding: 4rem 2rem;
            max-width: 1200px;
            margin: 0 auto;
            scroll-margin-top: 100px;
        }

        .use-cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .use-case-card {
            background: white;
            padding: 2rem;
            border-radius: 20px;
            box-shadow: var(--shadow);
            border-left: 4px solid var(--primary-color);
            transition: all 0.3s ease;
        }

        .use-case-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        .use-case-icon {
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }

        .use-case-title {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--text-color);
        }

        .use-case-description {
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 1rem;
        }

        .use-case-benefits {
            list-style: none;
            padding: 0;
        }

        .use-case-benefits li {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
            padding-left: 1rem;
            position: relative;
        }

        .use-case-benefits li:before {
            content: "✓";
            color: var(--primary-color);
            font-weight: bold;
            position: absolute;
            left: 0;
        }

        /* 行动召唤 */
        .cta-section {
            background: var(--primary-gradient);
            color: white;
            text-align: center;
            padding: 4rem 2rem;
            margin: 4rem 0 0;
        }

        .cta-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .cta-title {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .cta-subtitle {
            font-size: 1.2rem;
            opacity: 0.9;
            margin-bottom: 2rem;
        }

        .btn-white {
            background: white;
            color: var(--primary-color);
            padding: 1rem 2.5rem;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            box-shadow: 0 8px 25px rgba(255, 255, 255, 0.2);
            margin-right: 1rem;
        }

        .btn-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 35px rgba(255, 255, 255, 0.3);
        }

        /* 页脚 */
        .footer {
            background: #f8f9ff;
            padding: 3rem 2rem 2rem;
            border-top: 1px solid var(--border);
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }

        .footer-section h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--text-color);
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 0.5rem;
        }

        .footer-links a {
            color: var(--text-light);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-links a:hover {
            color: var(--primary-color);
        }

        .footer-bottom {
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid var(--border);
            text-align: center;
            color: var(--text-light);
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .nav-container {
                padding: 0 1rem;
            }

            .nav-links {
                display: none;
            }

            .hero {
                padding: 6rem 1rem 3rem;
            }

            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }

            .btn-primary, .btn-secondary {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }

            .architecture-flow {
                flex-direction: column;
            }

            .arch-arrow {
                transform: rotate(90deg);
            }

            .btn-white {
                margin: 0.5rem;
            }
        }

        /* 动画效果 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .fade-in {
            animation: fadeInUp 0.6s ease forwards;
        }
    </style>
</head>
<body id="top">
    <!-- 导航栏 -->
    <nav class="navbar">
        <div class="nav-container">
            <a href="#top" class="logo" onclick="scrollToTop(event)">
                🔥 AntSK FileChunk
            </a>
            <ul class="nav-links">
                <li><a href="#features">核心特性</a></li>
                <li><a href="#architecture">技术架构</a></li>
                <li><a href="#use-cases">使用场景</a></li>
                <li><a href="/docs">API文档</a></li>
                <li><a href="https://tree456.com/#products" target="_blank">其他产品</a></li>
                <li><a href="https://github.com/xuzeyu91/AntSK-FileChunk" target="_blank">GitHub</a></li>
            </ul>
            <a href="/chunker" class="cta-button">开始使用</a>
        </div>
    </nav>

    <!-- 英雄区域 -->
    <section class="hero">
        <h1>AntSK 语义文本切片服务</h1>
        <p class="hero-subtitle">
            基于深度语义理解的智能文档切片工具，专门解决传统基于固定长度或简单分隔符切片导致的<strong>语义割裂问题</strong>。
            通过先进的语义分析技术，智能识别文本的语义边界，确保每个切片在语义上的完整性和连贯性。
        </p>
        <div class="hero-buttons">
            <a href="/chunker" class="btn-primary">
                🚀 立即开始切片
            </a>
            <a href="#features" class="btn-secondary">
                了解核心特性
            </a>
        </div>
    </section>

    <!-- 核心特性 -->
    <section id="features" class="features">
        <h2 class="section-title">核心特性</h2>
        <p class="section-subtitle">
            先进的语义分析技术，让文档切片变得智能而精准
        </p>
        <div class="features-grid">
            <div class="feature-card fade-in">
                <div class="feature-icon">🧠</div>
                <h3 class="feature-title">智能语义切片</h3>
                <p class="feature-description">
                    使用SentenceTransformer模型计算语义向量，通过余弦相似度识别语义边界，
                    结合长度约束、语义阈值等多重因素进行智能切片决策。
                </p>
            </div>
            <div class="feature-card fade-in">
                <div class="feature-icon">📚</div>
                <h3 class="feature-title">多格式文档解析</h3>
                <p class="feature-description">
                    支持PDF、Word(.docx)、纯文本(.txt)等多种格式，
                    智能识别并保持文档的章节、段落、表格等结构信息。
                </p>
            </div>
            <div class="feature-card fade-in">
                <div class="feature-icon">⚡</div>
                <h3 class="feature-title">高效处理性能</h3>
                <p class="feature-description">
                    优化的算法设计，支持大文档的快速处理，
                    批处理语义向量计算，流式处理减少内存占用。
                </p>
            </div>
            <div class="feature-card fade-in">
                <div class="feature-icon">🎛️</div>
                <h3 class="feature-title">灵活参数配置</h3>
                <p class="feature-description">
                    丰富的参数配置选项，适应不同应用场景需求，
                    支持切片大小、语义阈值、重叠比例等多维度调优。
                </p>
            </div>
            <div class="feature-card fade-in">
                <div class="feature-icon">📊</div>
                <h3 class="feature-title">质量评估体系</h3>
                <p class="feature-description">
                    提供语义连贯性、长度分布、Token统计等多维度质量评估，
                    完整的切片质量统计信息和优化建议。
                </p>
            </div>
            <div class="feature-card fade-in">
                <div class="feature-icon">🔗</div>
                <h3 class="feature-title">API优先设计</h3>
                <p class="feature-description">
                    完整的RESTful API接口和Web界面，易于集成到现有系统，
                    支持文件上传和文本直接处理两种方式。
                </p>
            </div>
        </div>
    </section>

    <!-- 技术架构 -->
    <section id="architecture" class="architecture">
        <div class="architecture-container">
            <h2 class="section-title">技术架构</h2>
            <p class="section-subtitle">
                模块化设计，每个组件专注于特定功能，协同工作确保最佳效果
            </p>
            <div class="architecture-diagram">
                <div class="architecture-flow">
                    <div class="arch-step">
                        <h4>📄 文档解析器</h4>
                        <p>DocumentParser</p>
                    </div>
                    <div class="arch-arrow">→</div>
                    <div class="arch-step">
                        <h4>🧠 语义分析器</h4>
                        <p>SemanticAnalyzer</p>
                    </div>
                    <div class="arch-arrow">→</div>
                    <div class="arch-step">
                        <h4>✂️ 智能切片器</h4>
                        <p>SemanticChunker</p>
                    </div>
                    <div class="arch-arrow">→</div>
                    <div class="arch-step">
                        <h4>🔧 切片优化器</h4>
                        <p>ChunkOptimizer</p>
                    </div>
                    <div class="arch-arrow">→</div>
                    <div class="arch-step">
                        <h4>📈 质量评估器</h4>
                        <p>QualityEvaluator</p>
                    </div>
                </div>
            </div>
        </div>
    </section>

    <!-- 使用场景 -->
    <section id="use-cases" class="use-cases">
        <h2 class="section-title">应用场景</h2>
        <p class="section-subtitle">
            广泛适用于各种文档处理和AI应用场景
        </p>
        <div class="use-cases-grid">
            <div class="use-case-card fade-in">
                <div class="use-case-icon">🔍</div>
                <h3 class="use-case-title">RAG检索增强</h3>
                <p class="use-case-description">
                    为RAG应用提供高质量的文档切片，保持语义完整性，提升检索效果。
                </p>
                <ul class="use-case-benefits">
                    <li>语义边界智能识别</li>
                    <li>保持上下文连续性</li>
                    <li>优化检索精度</li>
                </ul>
            </div>
            <div class="use-case-card fade-in">
                <div class="use-case-icon">💬</div>
                <h3 class="use-case-title">问答系统</h3>
                <p class="use-case-description">
                    构建智能问答系统，确保答案的语义完整性和准确性。
                </p>
                <ul class="use-case-benefits">
                    <li>精准答案定位</li>
                    <li>上下文理解增强</li>
                    <li>答案质量提升</li>
                </ul>
            </div>
            <div class="use-case-card fade-in">
                <div class="use-case-icon">📝</div>
                <h3 class="use-case-title">文档总结</h3>
                <p class="use-case-description">
                    智能文档摘要生成，保持重要信息的语义完整性。
                </p>
                <ul class="use-case-benefits">
                    <li>关键信息提取</li>
                    <li>语义结构保持</li>
                    <li>摘要质量优化</li>
                </ul>
            </div>
            <div class="use-case-card fade-in">
                <div class="use-case-icon">🤖</div>
                <h3 class="use-case-title">AI训练数据</h3>
                <p class="use-case-description">
                    为AI模型训练提供高质量的文本数据，确保训练效果。
                </p>
                <ul class="use-case-benefits">
                    <li>数据质量保证</li>
                    <li>语义一致性</li>
                    <li>训练效果提升</li>
                </ul>
            </div>
            <div class="use-case-card fade-in">
                <div class="use-case-icon">🔄</div>
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